package com.hmdp.utils;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.http.HttpStatus;
import com.beust.jcommander.internal.Nullable;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * @author ghp
 * @title 登录拦截器
 * @description
 */
public class LoginInterceptor implements HandlerInterceptor {

    /**
     * 前置拦截器，用于判断用户是否登录
     *
     * @param request
     * @param response
     * @param handler
     * @return
     * @throws Exception
     */

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //判断是否需要拦截(ThreadLocal中是否有此用户
        if (UserHolder.getUser() == null) {
            //没有登录，返回401
            response.setStatus(401);
            return false;
        }
        return true;
    }

}